Sewer Deterioration Model for Asset Management Strategy Asset management is an increasing concern for wastewater utilities and municipalities. In the last 30 years, most cities have invested in sewer system expansion and treatment plant upgrade but a relatively small component has been allocated to the improvement of sewer system condition.…Continue reading »

Data-driven, sustainable drinking water provision in Mexico In many countries centralised water supply systems are failing to offer reliable supply of clean water. The main causes for this include incorrect design, changes in water demand (growing population, growing prosperity, false predictions), ageing assets, over-exploitation of water resources and climate change.…Continue reading »

Dealing with leakage losses in South Africa

In 2015 the City of Cape Town (CCT) started with the CFPD method, which is implemented in Watershare’s Network Flow Performance tool. The CFPD method was developed by KWR to analyse flow data for drinking water networks in order to identify and quantify …

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Singapore’s Smart Water Grid

More than 320 sensors installed island-wide in Singapore to constantly monitor the pressure, flow and quality of the water in our network.

Features

Pressure & Water Quality Monitoring Leak/Burst Detection Valve Simulation Hydraulic Modelling Demand Prediction Energy Optimisation

Benefits

Real-time sensing Respond Faster Minimize Disruption Reduce…Continue reading »

Thinking Water, Designing for the FutureLife expectancy data for different pipe materials

JWRC has developed life expectancy data for different pipe materials. The graph shows the proportion of pipes exceeding the life expectancy for different water utilities in Japan. These data enable to set priorities in pipe rehabilitation programmes.…

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Chlorine-free water for all Dutch water companies

The Dutch drinking water industry has decades of experience in distributing drinking water without a chlorine residual. In fact, the final step in this process was the renovation in 2006 of the Beerenplaat treatment plant, which is owned by Evides.

In this plant …

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Use of air/water cleaning to control membrane foulingThe use of air/water cleaning in vertically positioned, high-pressure membrane elements (known as AiRO) is a technology developed at KWR. This application periodically cleans the membrane elements, thus preventing the occurrence of extreme membrane fouling.

In 2010, the first full-scale installation using …

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Improving colour and taste of drinking waterThe Dutch water company Vitens has invested heavily in ion exchange processes over the past few years, with the objective of removing NOM and improving drinking water quality.

Besides improving the taste, colour and odour of the drinking water, ion exchange treatment also …

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Fluidised ion exchange (FIX) to improve the source water qualityThe application of FIX for the early removal of NOM in water treatment also produces a beneficial effect on the quality of the water produced and on all the subsequent treatment processes.

In this regard, a multi-year pilot study was …

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Improve the management of water system valvesGerman research centre Kompetenzzentrum Wasser Berlin (KWB) has taken a step towards helping improve the management of water system valves in the country following the launch of a study with a small municipality to use a tool originally developed in the Netherlands.

The …

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Improving valve inspection procedureKWR has helped the water company Evides to improve its valve inspection procedure. The inspection forms have been adapted and now provide useful information for the overall improvement of valve reliability.

Water companies can limit their valve maintenance costs by focusing on the most important failure …

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Designing targeted valve maintenance schemesKWR has used OptiValves in several European water distribution networks (e.g., those of Epal in Portugal, and Brabant Water and Waterbedrijf Groningen in the Netherlands) to design targeted valve maintenance schemes.

For Waterbedrijf Groningen, the customer minutes lost (CML) can be cut by up to …

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Network Flow Performance - PWNBased on the supply patterns for different periods, the CFPD can characterise and quantify the demand changes and the changes in water losses due to leakage in a specific area. The CFPD method was developed in 2011 within the water sector’s joint research programme (BTO)…Continue reading »

Network Flow Performance - EvidesBased on the supply patterns for different periods, the CFPD can characterise and quantify the demand changes and the changes in water losses due to leakage in a specific area. The CFPD method was developed in 2011 within the water sector’s joint research programme (BTO)…Continue reading »

Cutting costs while delivering top quality waterA number of Dutch water companies apply the design rule for self-cleaning networks following the hypothesis of particle-related processes.

A number of Dutch water companies apply the design rule for self-cleaning networks following the hypothesis of particle-related processes.

As a result, the total …

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Design rules for self-cleaning networksThe Dutch water company Dunea is currently building self-cleaning networks.

In the networks’ design, the company needs to estimate the maximum water demand for 100-200 connections, involving several types of customers. The design rule they are implementing is based on SIMDEUM® simulation results.

Members

KWR…Continue reading »

Design rules for drinking water installationsThe Dutch Building Services Knowledge Centre, ISSO, issues normative publications on the design of drinking water installations in homes and non-residential buildings. For hotels, offices and nursing homes, the design parameters for cold and hot water systems are based on SIMDEUM® simulation results. The…Continue reading »

Application of Gondwana to subdivide the network of the Hague into DMAsRecently, several Dutch drinking water companies have developed an interest to divide their networks into District Metered Areas (DMAs).

Historically, DMAs have not been commonly applied in the Netherlands, so implementing a division into DMAs requires a large …

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Advanced design approach for the DIAM networkUsing Watershare tools (Self Cleaning Networks, Water-Use Info) DIAM and KWR have developed an advanced design approach for the DIAM network.

The new design approach generates the following benefits.

the total length and volume of the network is smaller; the residence time of…Continue reading »

Self-cleaning and earthquake resilient water distribution networks in Japan Water supply utilities in Japan have to face huge challenges. Water demand is expected to considerably decrease as a result of declining population and the penetration of water-saving equipment. Earthquakes and ageing pose a threat to the continuity of supply.

A …

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A stochastic sewer model to support sewer design under water conservation measures

There is a need to reduce household water use and many countries are making the transition to separated sewer networks. Both the actions will reduce the wastewater that enters the sewage system. As part a PhD project at …

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